Mobile Security Key on New Phone

Alright, so recently I got a new cell phone since my old one was getting, well, old.

Anyways, installing all my apps again and came to my SWTOR Secruity Key app, which as asking for a Serial Number, which I can not find.

My new phone is still using the same SIM chip and phone number as my old one, so I didn't think this would have been an issue.

So, any help? Please? lol